~ubuntu-branches/ubuntu/saucy/monodevelop/saucy-proposed

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//
// DebugExecutionHandlerFactory.cs
//
// Author:
//   Lluis Sanchez Gual
//
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System;
using System.Collections.Generic;
using System.Threading;
using MonoDevelop.Core;
using MonoDevelop.Core.Execution;
using Mono.Debugging.Client;
using MonoDevelop.Ide.Gui;
using Mono.Debugging;

namespace MonoDevelop.Debugger
{
	internal class DebugExecutionHandlerFactory: IExecutionHandler
	{
		public bool CanExecute (ExecutionCommand command)
		{
			return DebuggingService.CanDebugCommand (command);
		}

		public IProcessAsyncOperation Execute (ExecutionCommand command, IConsole console)
		{
			if (!CanExecute (command))
			    return null;
			DebugExecutionHandler h = new DebugExecutionHandler (null);
			return h.Execute (command, console);
		}
	}
	
	class DebugExecutionHandler: IProcessAsyncOperation
	{
		bool done;
		ManualResetEvent stopEvent;
		DebuggerEngine factory;
		
		public DebugExecutionHandler (DebuggerEngine factory)
		{
			this.factory = factory;
			DebuggingService.StoppedEvent += new EventHandler (OnStopDebug);
		}
		
		public IProcessAsyncOperation Execute (ExecutionCommand command, IConsole console)
		{
			DebuggingService.InternalRun (command, factory, console);
			return this;
		}
		
		public void Cancel ()
		{
			DebuggingService.Stop ();
		}
		
		public void WaitForCompleted ()
		{
			lock (this) {
				if (done) return;
				if (stopEvent == null)
					stopEvent = new ManualResetEvent (false);
			}
			stopEvent.WaitOne ();
		}
		
		public int ExitCode {
			get { return 0; }
		}
		
		public bool IsCompleted {
			get { return done; }
		}
		
		public bool Success {
			get { return true; }
		}

		public bool SuccessWithWarnings {
			get { return true; }
		}

		void OnStopDebug (object sender, EventArgs args)
		{
			lock (this) {
				done = true;
				if (stopEvent != null)
					stopEvent.Set ();
				if (completedEvent != null)
					completedEvent (this);
			}

			DebuggingService.StoppedEvent -= new EventHandler (OnStopDebug);
		}
		
		event OperationHandler IAsyncOperation.Completed {
			add {
				bool raiseNow = false;
				lock (this) {
					if (done)
						raiseNow = true;
					else
						completedEvent += value;
				}
				if (raiseNow)
					value (this);
			}
			remove {
				lock (this) {
					completedEvent -= value;
				}
			}
		}
		
		//FIXME:
		public int ProcessId {
			get { return -1; }
		}
		
		event OperationHandler completedEvent;
		
		void IDisposable.Dispose () {}
	}
}